Push button switch



FIG. 1 is a front elevational view of a push button switch showing a fourth embodiment of our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top, front and right side perspective view thereof, shown in separated condition;

FIG. 8 is a bottom, rear and left side perspective view thereof, shown in separated condition;

FIG. 9 is a front elevational view of a switch part;

FIG. 10 is a rear elevational view thereof;

FIG. 11 is an enlarged bottom plan view thereof;

FIG. 12 is an exploded top perspective view thereof; and,

FIG. 13 is an exploded bottom perspective view thereof.

The broken lines depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a push button switch, as shown and described. 